Malicious PDF — malware analysis report

Static analysis result for SHA-256 1111751fdeaad894…

MALICIOUS

PDF

79.2 KB Created: 2021-04-04 06:35:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71a580c1ba7b6233ade6bf817e7622cd SHA-1: d226f01a25c2d91e29094c8226b98b8ef026bf8d SHA-256: 1111751fdeaad8943262bfaf3709bfa2e342778b401017343eadfc3ae6b8d58f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains multiple embedded URLs, one of which is directly referenced in the heuristic findings. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'student information system project in vb pdf', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ponafet.ru/strik?utm_term=student+information+system+project+in+vb+pdf
    • http://legendnat.space/first_and_second_conditional_exercises_advanced58q2i.pdf
    • http://yourcy.com/how_to_reset_a_whirlpool_cabrio_platinum_dryernvamu.pdf
    • http://ryduslim.website/bhojpuri_song_2019_dj_mp4_videonsdg0.pdf
    • http://bella24.xyz/nikon_fg_208ij5p.pdf
    • http://alifan.store/pistachio_pudding_pound_cake_recipez7jka.pdf
    • http://pek-24.cc/kimoxadiduryzl.pdf
    • http://vigazorafoli.iblogger.org/why_is_my_hp_printer_not_printing_clearly.pdf
    • http://videohost.space/zajedoberexbaa8v.pdf
    • http://rmk4sale.xyz/56818256539jav4l.pdf
    • http://antinomi.design/3689700183098qyt.pdf
    • http://fastpysystem.online/624243103782wg6r.pdf
    • http://megenubi.22web.org/hunger_games_mockingjay_film_wiki.pdf
    • https://cdn.sqhk.co/jewimebobi/cji6ODA/air_jordan_1_union_real_vs_fake.pdf
    • http://flylovel.com/guwamejetun886we.pdf
    • http://pogadai.xyz/658813187808kj0a.pdf
    • http://muzoc.xyz/how_to_upgrade_zoom_account_for_free86mt6.pdf
    • https://cdn.sqhk.co/wagomito/0icgihd/record_live_streaming_video_software_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://27dd58ca-3bab-4825-b0a2-cb75a9f796de.filesusr.com/ugd/aba4c5_3a6892b6de0d4a1bb2ec8f0b44fd3897.pdf?index=true
    • https://beb587af-1766-4a1c-893d-8c04a9882fa7.filesusr.com/ugd/f3bec4_c7f6dc7959ee4f778c014ce63039349a.pdf?index=true
    • https://baad1762-ad72-434c-be9a-9de7d8068d01.filesusr.com/ugd/61395f_dc1ad389446b45e7b41b1440623112ef.pdf?index=true
    • https://c93e3e17-565c-496b-95a0-45fea83b015f.filesusr.com/ugd/cd9bb8_e0d7348bb8b64dfdba8586225b3159dd.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f83e.bin
4ba381c67b0e3395b04ad57eeb5a6c97513b794e4bb9744b52673a2b78b0639c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF83E 5752 bytes
font_01_sfnt_off00010bcb.bin
0fd9b96bcae082fd882b02fc71397b1ed6527d1a771f261b10e368c6a1c44efe
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCB 10400 bytes